Patents Assigned to GENEREAL ELECTRIC COMPANY
  • Patent number: 10085698
    Abstract: Methods and systems are provided for automated tube current modulation (ATCM). In one embodiment, a method for an imaging system comprises: calculating a desired dose level based on a clinical task, a size of a subject to be scanned, and an image quality level; generating a scan protocol based on a relation between the image quality level and at least one characteristic of the imaging system; and performing a scan of the subject at the desired dose level and according to the generated scan protocol. In this way, ATCM can be optimized based on elements that impact image quality such as the clinical task, the physical characteristics of the imaging system, the individual patient, and the reader's preference.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 2, 2018
    Assignee: Genereal Electric Company
    Inventors: Jiahua Fan, Xiaoyu Tian, Dominic Joseph Crotty
  • Patent number: 9332602
    Abstract: A system and apparatus including a light emitting diode (LED) driver provides an operating DC voltage to a plurality of LEDs connected in series (LED array) for providing illumination. A rectifier circuit and a filter are coupled to an AC power supply and provide a rectified and filtered DC source voltage to a transformerless voltage boost circuit, which provides the operating DC voltage to the LED array. A hysteretic self-oscillating circuit drives the transformerless voltage boost circuit at an oscillation frequency. A tap is connected between two LEDs in the LED array, which provides an auxiliary DC voltage, which is used to power the oscillating circuit and which eliminates the need for the LED driver to have a conventional transformer or auxiliary DC-DC power converter. The transformerless voltage boost circuit includes an inductor, a capacitor, a diode, and a switch wherein the switch is controlled by the oscillating circuit.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 3, 2016
    Assignee: GENEREAL ELECTRIC COMPANY
    Inventors: Bruce Richard Roberts, Shahzil Rana